• 文献标题:   Stability of hydrogenated graphene: a first-principles study
  • 文献类型:   Article
  • 作  者:   YI D, YANG L, XIE SJ, SAXENA A
  • 作者关键词:  
  • 出版物名称:   RSC ADVANCES
  • ISSN:   2046-2069
  • 通讯作者地址:   Shandong Univ
  • 被引频次:   17
  • DOI:   10.1039/c5ra00004a
  • 出版年:   2015

▎ 摘  要

In order to explain the disagreement between present theoretical and experimental investigations on the stability of hydrogenated graphene, we have systematically studied hydrogenated graphene with different configurations from the consideration of single-side and double-side adsorption using first-principles calculations. Both binding energy and formation energy are calculated to characterize the stability of the system. It is found that single-side hydrogenated graphene is always unstable. However, for double-side hydrogenation, some configurations are stable due to the increased carbon-carbon sp(3) hybridization compared to single-side hydrogenation. Furthermore, it is found that the system is energetically favorable when an equal number of hydrogen atoms are adsorbed on each side of the graphene.